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Ronald,

two quick comments:
1. you can calculate graph distance and closure on RDF data, just not
with SPARQL
2. how often do you need to do that for bibliographic data?

On Mon, Feb 2, 2015 at 7:20 PM, Murray, Ronald <[log in to unmask]> wrote:
> Jeff:
>
>
>
> Agreed. Where things get tricky is when an implementation language closes
> off desirable/necessary descriptive possibilities. For example the “graph”
> properties implemented by RDF don’t encompass the broader set of graph
> properties and measurements documented in Wolfram Mathematica, for example:
>
>
>
> http://reference.wolfram.com/language/guide/GraphPropertiesAndMeasurements.html
>
>
>
> A lot of these properties and measurements can be assigned
> community-relevant theoretical meanings, enabling discussions of what we
> want (leading to implementations of what we want) in a more accurate
> fashion. For example:
>
>
>
> What is the “graph distance*” between description “A” and description “B” if
> we permit relationships “X” , “Y”, and “Z” to be used as links/edges?
>
>
>
> Are “B’s” descriptions reachable from “A’s” at all?
>
>
>
> “Someone” wishing to benefit from those kinds of graph possibilities has to
> put those properties and measurements into their graph descriptions and
> applications, or implement them as part of their application layer, e.g.:
>
>
>
> RDAGraphDistance(target, source, RDAgraph [optional relationship_list])
> Returns “Infinity” of no path exists.
>
>
>
> Ron M.
>
>
>
> * http://reference.wolfram.com/language/ref/GraphDistance.html
>
>
>
>
>
> From: Bibliographic Framework Transition Initiative Forum
> [mailto:[log in to unmask]] On Behalf Of Young,Jeff (OR)
> Sent: Monday, February 02, 2015 12:24 PM
>
>
> To: [log in to unmask]
> Subject: Re: [BIBFRAME] 2-tier BIBFRAME
>
>
>
> Ron,
>
>
>
> I think you’re saying that modeling experts need to listen to domain experts
> and the former need to reflect it back in ways the latter (and beyond) can
> consistently recognize, understand, and use more efficiently. An analogy
> would be mathematics. Math needs to reflect reality and prove itself useful
> in practice, but not everybody needs to know the math to realize those
> benefits.
>
>
>
> I would argue that modeling experts need to be steeped in the jargon-intense
> vocabularies of RDF so they can create domain-friendly vocabularies where
> the RDF underpinnings aren’t necessarily even noticed. Unfortunately, we
> live the renaissance period where the boundaries aren’t necessary clear to
> everyone.
>
>
>
> Jeff
>
>
>
> From: Bibliographic Framework Transition Initiative Forum
> [mailto:[log in to unmask]] On Behalf Of Murray, Ronald
> Sent: Monday, February 02, 2015 11:44 AM
> To: [log in to unmask]
> Subject: Re: [BIBFRAME] 2-tier BIBFRAME
>
>
>
> The difficulty I see in this thread (and much prior to this thread)  is that
> instead of contending with a single approach to bibliographic description
> couched in the implementation language of the time (book, card, and MARC
> catalog technology) we now see two approaches where workers are trying to do
> theory in implementation (or at least IT-centric ) languages.
>
>
>
> Not all of the issues associated with Cultural Heritage resource description
> fall with the scope of IT-centric descriptive languages.
>
>
>
> Early 20th century approaches to scientific description (observers,
> observations, reference frames, etc.) and for representing systems of
> relationships (graph, node/vertex, link/edge, subgraph, degree centrality,
> etc.) together (along with conceptual contributions from the social
> sciences) provide more than enough – implementable –  descriptive power to
> address library/archive-grade resource description requirements.
>
>
>
> You have to apply the two approaches simultaneously.
>
>
>
> Ron Murray
>
>
>
> From: Robert Sanderson <[log in to unmask]>
> Reply-To: Bibliographic Framework Transition Initiative Forum
> <[log in to unmask]>
> Date: Saturday, January 31, 2015 at 3:09 PM
> To: "[log in to unmask]" <[log in to unmask]>
> Subject: Re: [BIBFRAME] 2-tier BIBFRAME
>
>
>
>
>
> Let me add a few points to that:
>
>
>
> * We need to take into consideration the viewpoints of people who are
> experienced in both sides of the current effort (bibliographic description
> and linked data), and there are very few people with a great deal of
> expertise in both.
>
>
>
> * Actually, in my view, having people engaging with the effort that do NOT
> know MARC is an advantage, not a disadvantage.  There are a huge number of
> peculiarities introduced over the years that should be reconsidered by fresh
> eyes, rather than perpetuated without cause.
>
>
>
> * There's more future than there is past. MARC has existed for a long time,
> and there's a lot of legacy there. But there's even more bibliographic
> descriptions that have yet to be written. The longer we remain tied to this
> horribly outdated technology, the more legacy data we will need to deal with
> and the further apart from the rest of the world (that is part of the web,
> not just displayed via the web) we become.
>
>
>
> Your mileage may vary :)
>
>
>
> Rob
>
>
>
>
>
> On Sat, Jan 31, 2015 at 10:43 AM, Jeff Young <[log in to unmask]>
> wrote:
>
> Michael,
>
> The reason is so that people who have never seen a MARC record never need
> to. They just want the information that is locked up deep inside.
>
> Jeff
>
>
>
>
>> On Jan 31, 2015, at 1:28 PM, Michael Ayres <[log in to unmask]>
>> wrote:
>>
>> Martynas wrote:
>>>> ...
>>>> I haven't seen any actual MARC data, but if someone has a simple
>>>> example, we could work on that.
>>>>
>>>> Martynas
>>
>> Warning--RANT ahead:
>> OK--You've got be kidding!!  Why is someone who has never seen any actual
>> MARC data trying to mess with restructuring the framework of our library
>> catalogs?!?
>> This is preposterous!  As someone who has spent years cataloging (in both
>> academic and public institutions) as well as managing local systems and
>> library catalog data--I, for one, find this whole 'BIBFRAME' project
>> laughable.  Why do the 'powers that be' think that we even want our local
>> catalogs to be semantically connected to the web or have all of our data
>> linked?!  But go ahead and just keep on theorizing, while those of us in the
>> trenches keep serving our local customers' needs so very well with MARC (and
>> AACR2).
>> [rant over--no need to respond to this]
>>
>>
>
>
>
>
>
> --
>
> Rob Sanderson
>
> Information Standards Advocate
>
> Digital Library Systems and Services
>
> Stanford, CA 94305